Resumo

GALLEGO JARAMILLO, Liliana María et al. Identification of intestinal parasites in water from deep wells located in four municipalities of the state of Aragua, Venezuela, 2011-2012. Rev Cubana Med Trop [online]. 2014, vol.66, n.2, pp. 164-173. ISSN 0375-0760.

Introduction: groundwater is a natural resource found in underground cracks and gaps, where it accumulates in layers of soil, sand and rock made up of permeable materials allowing its motion. The wells from which groundwater is pumped up may become contaminated by pathogenic microorganisms due to subsoil filtration of wastewater and other contaminants. Objectives: identify intestinal parasites in human consumption water from deep wells located in the municipalities of Girardot (GIR), Francisco Linares Alcántara (FLA), José Ángel Lamas (JAL) and Libertador (LIB), in the state of Aragua, Venezuela. Methods: water samples were collected from 56 deep wells located in the four municipalities. The flocculation concentration method was applied to recover helminth eggs and protozoan cysts. Kinyoun staining was used to diagnose intestinal coccidia and microsporidians. Results: recovery of helminth eggs, protozoan cysts and intestinal microsporidians revealed an overall prevalence of 37.5 %, with the greatest values in FLA (70 %). Protozoa were found in 90 % of the positive samples, the most common species being Blastocystis sp. and Endolimax nana. Helminth eggs were found only in FLA. No evidence was observed of the presence of coccidia in the samples analyzed. Microsporidians were found in a sample from LIB. Conclusion: results point to the need to treat the water before human consumption, being as it is an important medium for the transmission of intestinal parasites.

Palavras-chave : groundwater; intestinal parasites; flocculation.

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